[18.0][FIX] website_sale_*: Fix eslint warning

[Kimkhoi3010]

Context:

Fix various ESLint warnings in website sale JS modules:

• website_sale_product_attribute_value_filter_existing
• website_sale_acquirer_confirm_order
• website_sale_checkout_skip_payment
• website_sale_stock_provisioning_date
• website_sale_require_legal
• website_snippet_product_category
• website_sale_secondary_unit

Changes

• website_sale_product_attribute_value_filter_existing: Adjust handling of the Odoo-specific module header to satisfy JSDoc / ESLint expectations in website_sale_product_attribute_value_filter_existing_search_desk_tour.esm.js.
• website_sale_acquirer_confirm_order: Reorder imports so that import * as comes before named imports, complying with the sort-imports rule in website_sale_acquirer_confirm_order_tour.esm.js.
• website_sale_checkout_skip_payment: Reorder imports so that import * as comes before named imports to satisfy sort-imports in website_sale_checkout_skip_payment_tour.esm.js.
• website_sale_stock_provisioning_date: Sort named imports alphabetically by module path to fix sort-imports warnings in website_sale_stock_provisioning_date_tour.esm.js.
• website_sale_require_legal: Reorder imports so that import * as comes before named imports, complying with the sort-imports rule in tour.esm.js.
• website_snippet_product_category: Sort imports alphabetically by module path to satisfy sort-imports in frontend.esm.js.
• website_sale_secondary_unit: Refactor _onChangeSecondaryUom to avoid reassigning the ev parameter by introducing a local eventToUse variable, keeping the existing fake-event hack while satisfying the no-param-reassign rule in website_sale_secondary_unit.esm.js.

[OCA-git-bot]

Hi @Tardo, @pilarvargas-tecnativa,
some modules you are maintaining are being modified, check this out!

[carlos-lopez-tecnativa]

LGTM

[OCA-git-bot]

This PR has the approved label and has been created more than 5 days ago. It should therefore be ready to merge by a maintainer (or a PSC member if the concerned addon has no declared maintainer). 🤖